From chma@mbari.org Tue Jul 9 10:49 PDT 1996 Received: from wave.mbari.org by tide.mbari.org with ESMTP (1.37.109.16/16.2) id AA175464581; Tue, 9 Jul 1996 10:49:42 -0700 Return-Path: Received: from bonito.mbari.org by wave.mbari.org with ESMTP ($Revision: 1.2 $/16.2) id AA088904573; Tue, 9 Jul 1996 10:49:34 -0700 Received: by bonito.mbari.org ($Revision: 1.2 $/15.6) id AA082044572; Tue, 9 Jul 1996 10:49:32 -0700 From: Mark Chaffey 408-647-3708 Subject: Hydrophone PS To: pean@wave.mbari.org (Andrew Pearce) Date: Tue, 9 Jul 96 10:49:31 PDT Cc: chma@wave.mbari.org (Mark Chaffey) Mailer: Elm [revision: 66.25] Status: RO PRELIMINARY PROGRAMMING NOTES: 1. Board will respond to read or write cycles at the address hex 63. 2. DATA bus functions. bit 0 - write only 1 enables power supply, 0 disables. bit 1 - read only 1 power supply failure, 0 power ok. bit 2 - NC bit 3 - NC bit 4 - NC bit 5 - NC bit 6 - write only 1 turns on "CPU sees me" on board LED. 0 turns off. bit 7 - NC Writes to any other locations other than those implemented will have no effect. Reads from any location except bit 1 will always return a 1. I don't know yet the time delay between turning on the PS and having the PS_STATUS bit 1 go low, estimate a few 10's of milliseconds. PS_STATUS only needs to be checked very infrequently, just a diagnostic tool to help when all of a sudden no more hydrophones (1-10 seconds?). - Mark C.